Case Presentation: A 55-year-old patient with history of Crohn s disease complicated by small bowel obstruction s/p resection and ileocolonic anastomosis, and transition to Upadacitinib from infliximab, a month prior to the admission, presented with a three-day duration of worsening abdominal pain, non-bloody diarrhea, and intermittent fevers. Vital signs notable for temperature of 102.2F and [...]